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Finding the Fourth Proportional to 26,648.98, 39,973.46 and 7,929.28

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Solution

The fourth proportional to 26,648.98, 39,973.46 and 7,929.28 is: 11,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,648.98 : 39,973.46 = 7,929.28 : x
  2. Step 2: Convert to fraction form
    26,648.98/39,973.46 = 7,929.28/x
  3. Step 3: Cross multiply
    26,648.98x = 39,973.46 × 7,929.28
  4. Step 4: Simplify right side
    26,648.98x = 316,960,756.91
  5. Step 5: Solve for x
    x = 316,960,756.91/26,648.98
  6. Step 6: Final answer
    x = 11,893.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.